structure of parasympathetic system

Question 1

the nervous system can be split into 5 parts list them

Answer 1

the autonomic nervous system
the enteric nervous system
the peripheral nervous system
brain
spinal cord

Question 2

what is the cns made of

Answer 2

brain and spinal cord

Question 3

what makes up the peripheral nervous system

Answer 3

somatic nervous system
autonomic nervous system

Question 4

what is the somatic nervous systemlat

Answer 4

largely things over which you have conscious control voluntary

Question 6

what makes up the autonomic nervous system

Answer 6

enteric, sympathetic, parasympathetic

Question 7

give examples of things controlled by the somatic control

Answer 7

limb movements movement of skeletal muscles
sensory inputs temperature,pain, touch

Question 8

what is controlled by the autonomic nervous system

Answer 8

regulation of activity of smooth muscles,blood vessels and viscera,
activity of many glands sweat glands salivary glands
regulation of heartbeat
regulation of activity of digestive tract
inputs are feedback (blood pressure and some pain)

Question 9

what is the autonomic nervous system composed of

Answer 9

sympathetic and parasympathetic divisions
regulates operations of internal organs
many organs recieve innervations from both division

Question 10

what is the gross organisation of the autonomic nervous system

Answer 10

2 neuron chain
this has a preganglionic neurone rising from the central nervous system
a synapse within an autonomic ganglion between pre ganglionic and post ganglionic neurones
a post ganglipnic neurone innervates the target organ

Question 11

what are autonomic ganglia

Answer 11

ganglia are swellings on peripheral nerves that contain neuronal cell bodies
in autonomic ganglia they also contain a swelling between pre ganglionic and post ganglionic neurones
the nerves containing preganglionic neuronal projections to the ganglia re myelinated and are called white rami
the nerves carrying post ganglionic neuronal projections away from ganglia are unmeylinated and are called grey rami

Question 12

what origin in the cns does the sympathetic nervous system have

Answer 12

thoracco lumbar origin
the projections from the cns are organised viscerotopically organs higher up in the body are innervated from higher in the spinal cord

Question 13

where are sympathetic pre ganglionic neurones found

Answer 13

thoracic upper lumbar levels of the spinal cord
they are located in the lateral horn
they project out from spinal cord via ventral root and connect to sympathetic ganglia via white ramus

Question 14

where is sympathetic ganglia located

Answer 14

close to the spinal cord

Question 15

what 2 main sites are sympathetic ganglia found in

Answer 15

paravertebral chain
prevertebral ganglia

Question 16

what is the paravertebral chain also known as

Answer 16

sympathetic chain runs alongside the vertebral column

Question 17

what is the prevertebral chain also known as

Answer 17

abdominal or collateral ganglia
found in front of the abdominal aorta

Question 18

what gland is considered a modified sympathetic ganglion

Answer 18

adrenal gland
directly innervated by sympathetic preganglionic neurones
cells in the adrenal medulla are neurone like and release adrenaline and noreadrenaline into the bloodstream

Question 19

what are sympathetic post ganglionic neurones

Answer 19

project from sympathetic ganglia to their targets
targets may be smooth muscle, cardiac muscle, or glands
these projections have etensive branching to allow multiple points of contact with their target